CVE-2008-5211 in Sphider
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in search.php in Sphider 1.3.4, when the search suggestion feature is enabled, allows remote attackers to inject arbitrary web script or HTML via the query parameter, a different vector than CVE-2006-2506.
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Analysis
by VulDB Data Team • 10/21/2025
The vulnerability identified as CVE-2008-5211 represents a cross-site scripting flaw in the Sphider 1.3.4 web search application that specifically affects the search suggestion functionality. This issue arises when the search suggestion feature is enabled, creating an attack surface that enables remote threat actors to inject malicious web scripts or HTML content directly into the application's search interface. The vulnerability operates through the query parameter manipulation, allowing attackers to execute arbitrary code within the context of a victim's browser session. Unlike CVE-2006-2506 which addressed a similar issue in a different vector, this particular vulnerability demonstrates how search functionality can become a critical entry point for web-based attacks. The flaw falls under the CWE-79 category of Cross-Site Scripting, which is classified as a fundamental weakness in web application security that enables attackers to inject malicious client-side scripts into web pages viewed by other users. This vulnerability is particularly concerning because it leverages the legitimate search functionality of the application, making it more difficult for users to distinguish between benign search results and malicious payloads.
The technical exploitation of CVE-2008-5211 occurs when an attacker crafts a malicious query string containing JavaScript or HTML code and submits it through the search.php script. When the search suggestion feature is active, the application fails to properly sanitize or encode user input before displaying it back to users in the search interface. This lack of input validation creates a persistent XSS vulnerability where the injected code executes in the browser context of any user who views the affected search results or suggestions. The vulnerability's impact extends beyond simple script execution as it can enable session hijacking, credential theft, and redirection to malicious sites. The attack vector is particularly insidious because it exploits the trust relationship between the user and the search application, where users expect search results to be benign and safe. From an operational perspective, this vulnerability allows attackers to manipulate the search experience for all users, potentially defacing search results, stealing session cookies, or redirecting users to phishing sites that can harvest sensitive information.
The operational impact of CVE-2008-5211 is significant for organizations relying on Sphider 1.3.4 for their search functionality, as it represents a direct threat to user security and application integrity. Attackers can leverage this vulnerability to perform session management attacks, where they steal authentication tokens and impersonate legitimate users within the application. The vulnerability also enables more sophisticated attacks such as credential harvesting through keylogging scripts or malicious redirects that can lead to full system compromise. From the ATT&CK framework perspective, this vulnerability aligns with techniques such as T1059.007 (Command and Scripting Interpreter: JavaScript) and T1566 (Phishing) as attackers can use the XSS flaw to deliver malicious payloads and redirect users to fraudulent websites. Organizations using this vulnerable version of Sphider face risks including data breaches, reputation damage, and potential regulatory compliance violations. The vulnerability's persistence means that once exploited, malicious code can continue to affect users until the application is properly patched or the search suggestions feature is disabled.
Mitigation strategies for CVE-2008-5211 should prioritize immediate remediation through official security patches provided by the Sphider development team or vendor. Organizations should implement comprehensive input validation and output encoding mechanisms to prevent malicious code from being executed in the browser context. The most effective immediate solution involves disabling the search suggestion feature until a proper patch is applied, as this removes the attack surface entirely. Security configurations should include implementing Content Security Policy headers to limit script execution and prevent unauthorized code injection. Additionally, regular security assessments and input sanitization routines should be deployed to prevent similar vulnerabilities in other application components. Organizations should also consider implementing web application firewalls to detect and block malicious query parameters before they can be processed by the vulnerable application. The vulnerability serves as a reminder of the critical importance of proper input validation in web applications and highlights the need for continuous security monitoring and timely patch management to prevent exploitation of known vulnerabilities.